Shock-eliminator



R. T. NEWTON.

SHOCK ELl'MxNAToR.

` APPLICATION FILED lULY 12,1915. 'l

Patented Feb. 3,1920?? -thimb'le 20 extends downward .casing and is jointed at its 5m RICHARD T. NEWTON, OF NUTLEY, NEW JERSEY.

SHOCK-ELIMINATOR.

Specification of Letters latent.

Patented Feb. 3, 1920.

i Application filed July 12, 1915. Serial No. 39.428.

To alltwwm t may concern.'

Be it known that I, RICHARD T. NEWTON, a citizen of the UnitedStates of America, residing in N utley, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Shock- Eliminators, of which the following is a specification.

My invention relates to shock eliminators `and particularly to a device for use on automobiles Qr the like the object of my invention being toprovide a device of this type improved in certain details of construction shown in the accompanying drawing, in

which- Figure 1 is a vertical section through a shock eliminator in which my invention is embodied in one form, and

Fig. 2 is a cross-section on the line 2-2,

Fig. 1.

Only a single shock eliminator unit isV shown in the accompanying drawing, although two pair are used in a complete installation, one unit being mounted on each side in the front and rear of the chassis. The unit shown is adapted for use at the front end'of the chassis. At `the end of the longitudinal member 5 of the chassis frame, is secured, in any suitable manner, a bracket 6 rigidly fastened to a tubular casing 7. The semi-elliptic leaf spring 8, on which the chassis is ordinarily directly supported, is jointed to a rocking lever 10 pivoted, on the a-Xis 11, to a boss 12 at the lower end of the tubular casing 7. At the rear of the chassis, the connection between the springv 8 and lever 10 is preferably established through a link 9 as indicated in dotted lines in Fig. 1. Pivoted at. 13 on the rocking lever 10 1s a connecting rod le secured at its upper end 15 to a bearing ring 16 within the casing'lg- Aheavy coil spring 17 rests at its lower end v -against .the ring 16 and its upper end against an'annular abutment 18 formed on the inner wall of a cap' 19, which has a sliding fit with the open top of the casingf?. The cap is centrally apertured to receive the internally threaded nut, here in the shape of .a 'thimble 20 provided with-a iiange 21v overiying Tand engaging the top ofthe Cap.. I ./-'t connecting rodv 22 screwed at its upper ei'rl'mto the 'r end to "an 'ated on the end the arm 23of the buffer lever 2e. l, axisy 11 and carrying at its cui buier 25/'Whcjhmay .be of any t bearing ring 16 is accentuated and the shock- ,is'thus restrained and an easy riding motion ,this downward movement o struction. For the unit at rear vof the chasf sis, the buffer 25 and its supporting arm 24 are of course omitted. A boss 26 on the upper side of the lever arm 23 bears against the base 27 of the'casing'7 in thenormal position of the buffer 25. y The cap19 is thus held through boss-26, lever, arm 2,3,connecting rod 22 a-ndthimble 20 in normally rigid relationship to the tubular'casi v7. When the car passes over a roughness 1n the road, the upward-pressure of spring 8 `uponthe eliminator spring 17 further compressed momentarily, tlus cushioning the shock which would otherwise be transmitted directly to the chassis- 5. v v Below the vbearing ring' 16-is arrangedv a somewhat lighter spring-28,the upper end' of which bea-rs against thisringwhile the f lower end rests uponan annular fiange 29 in the lower portion of the 'casing 7. This spring acts in opposite direction to the heavier spring 17 and serves to cushion-the upward ,throw of the body of the car when a deep rut or bump is encountered.. In such case the hea thrust of the s rings 8 and 17 strong] ten s to throw the tiassis upward, with t e result that unlessl counteracted there would be uncomfortably great motion in -the car body. As' the car rises under the thrust of the springs however, its upward inertia is greater than the movement of the wheels and springs 8, with the consequence that the casing 7 rises faster than the abutment ring 16 and thus compresses the spring 28 between the flange 29 and the ring v16. The violent upward movement of the chassis secured. y 95 When the buii'er 25 strikes an obstruction, the bell crank lever 24 swings up on the axis 11, pulling down the lever arm 23- and thus, through the connecting rod 22 and thimhle 29, sliding the cap vdown on .the tubular casing 7. Thejsprm 17 yields on. the ca and cushions the shock to the buffer. Sihould the shock be suicientlyf fheavy, the bearing ring 1,6,s forced downward andthe thrust compensated in part bythe light spring 28 and the vehicle spring 8to which the effort is transmitted by the rod 14 .and rock lever 10, and, at the rear of 'the car, by link 9.

It isobvious that the initial tension of 'the heavy spring 17 may be adjusted to in sure its proper action by the extent to which c' ai the thimble v20 is screwed down upon the- Various modifications ot the construction will readily suggest themselves `to those skilled in the art without departing from what I Claim as my invention.

I cla-im as my invention l. In a shock eliminator for vehicles, a casing-rigid with the vehicle frame, a cap slidable upon the upper end ot saidv casing, a rocking lever operatively connected at one end to said casing and at the other end to the vehicle spring, a spring abutment within said ci sing and moving with said level', a shock eliminator spring confined between said cap and spring abutment and means formaintaiuing said cap in normally stationary position with relation to the casing.

In a-shock eliminator for vehicles, a casing rigid with the vehicle frame, a cap slidable upon the upper end ot said casing, a rocking lever operatively connected at one end to said casing and at the other end to the vehicle spring, a spring abutment within said easing and moving with said lever, a shock eliminator spring confined between said cap and spring abutment and means for maintaining said cap in normally stationary position with relation to the easing, together with means for adjusting the normal position of said cap with relation to the casing to vary the initial tension ot said spring,

3. In a shock eliminator for vehicles, a casing rigid with the vehicle frame, a cap slidable upon the upper end o't' said casing` a rocking lever operativel)v connected at one end to saidA casing and at the other end to the vehicle spring, a spring abutment within said easing and moving wtih said lever, ay shock eliminator spring conined between said cap and spring abutment, a buffer and an operative Connection between the latter and the cap for pulling said cap down on the casing on shock to said buffer.

4. In a shock eliminator for vehicles, a casing rigid with the vehicle fra-mc. a cap slidable upon the upper end of said casing, a rocking lever operatively connected a't one end to said casing and at the other end to the vehicle spring. a. spring abutment within said casing and moving with said lever, a shock eliminator spring confined between said cap and spring abutment, a butter and an operative connection between tile latter and the cap for pulling said cap down on the casing on shock to said butl'er, together with a light spring confined below said spring abutment and subjected to compression by the latter through the heavy eliminator spring on shock to the buffer.

v5. In a shock eliminator for vehicles, a casing rigid with the vehicle frame, a cap slidable on the casing, a spring confined within the casing and bearing at one end against said cap, a buffer, and an operative connection between said buffer and cap for displacing the latterl on shock to the buli'er.

6. In a shock eliminator for vehicles, a casing rigid with the vehicle frame, an apertured cap slidable on said casing, an internally threaded nut fitting in said cap aperture and bearing on the cap, a screw rod threaded into said thi'mble, a lever and an operative connection between said rod and lever, together with a cushioning spring bearing` at one end against saidcap.

7. In a shock eliminator for vehicles, a casing rigid with the vehicle frame, a cap slidablv mounted thereon, a cushioning spring within the casing and bearing at one end against the cap, a lever, and an adjustable connection between they latter and the cap by which the initial tension of the cushionii'ig spring may be determined.

S. In a shock eliminator for vehicles, a casing rigid with the vehicle fra-ine, a cap slidably mounted thereon, a cushioning spring within the casing andbearing at one end against the cap, a lever, and aI screwedconnection between said lever and cap by 'which the initial tension of the cushioning spring may be determined.

.9. In a shock eliminator for vehicles, a easing rigid with the vehicle frame, a cap slidable on said casing, spring abutments on said ap and casing, a plurality of springs within said casing bearing `at their opposite ends against said abutments, a nu table abutment between said springs, and an operative connection between said movable abutment and the vehicle spring together with a buffer, a bell crank lever one arm of which supports the buli'er andan operative connection between the other arm ot' said bell crank lever and the easing cap,

ufor the purpose described.

1t). In a'shock eliminator for vehicles. a easing rigid with the vehicle frame, a cap slidable on said casing, spring abutments on said cap and casing, a plurality of springs within said casing bearing at their opposite ends against said abu'tments, a movable abutment between said springs, and an operative connection.between said movable abutment and the vehicle spring, together with a buil'er and an operative connection between the same and the casing cap.

In testimony whereof I have signed my name to this specification, in the presence lot two subscribing witnesses. ,f-

RICIIARD T. EVVTON Witnesses:

S. H. JoHNsoN, AUGUST TAIN,

llt) 

